(Solved): Practice with trig Sub: Evaluate the following trigonometric integrals using the following steps: ...

Practice with trig Sub: Evaluate the following trigonometric integrals using the following steps: $$i$$ Use the provided trigonometric substitution to get an integral in terms of $$?$$. ii Evaluate the integral in terms of $$?$$ - this may require the use of trig identities. iii When necessary, use a right triangle to express the antiderivative in terms of $$x$$ - this may require the use of more trig identities. (a) $$?\frac{x^{2}dx}{\sqrt{1?x^2}},x=\sin (?)$$ (b) $$?\frac{dx}{{\left(x^2+4\right)}^2},x=2\tan (?)$$